Method of stoking furnaces.



missm'sv. PATENTED MAY 26, 1908.

0. w. CROSBY] METHOD OF STOKING FURNACES. APPLICATION FILED JULY 21, 1906.-

5 SHEETS- SHEET 1.

gs l a No. 888,787. PATENT-ED MAY 26, 1908.

I G-LW-wGROS BY.

METHOD OF STOKING'PURNAGES.

APPLICATION FILED TU LY 21,1906. I

5 SHEETS-SHEET 2,

II E:

'luuimummmmm l7 742W jx w/zw No. 888,787. Y PATEN'TED MAY 26, xaos.

- c. w. CROSBY.

METHOD OF STORING FURNACES.

APPLICATION FILED JULY 21,1906. I

6 sums-sum: 4.

-5z if 19 No. 88,787. PATENTED MAY 26, 1908.

. (1w. GROSBCYI.

MBTHODOP STOKING FURNACES. APPLIOATIOK I 'ILED JULY 81, 1906.

5 SHEBTSHSHEETE.

- fed.

] UNITED s'r rEs PATENT oFFIo I' CLARENCE. W. CROSBY, OF GHIGAGO, ILLINOIS, ASSIGNOR TO INTERNATIONAL SIOKER GOI'IPANY, .OF CHICAGO, ILLINOIS, A CORPORATION OF SOUTH DAKOTA.

METHOD IOF3STOKING FURNACES.

. Naessflsa Specification f Letters Patent Patented Meyers, 1908.

Application filed July 21, 1906. Serial No. 327,245.

To all whom it may concern:

Be it known that I, CLARENCE W. OnosBY, citizen of the United States, residing at Chi;- cago, in the county of Cook and State of Illinois, have invented a certain new and Furnaces, of which the following is a full,

clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

Myinvention relates to furnaces, and has for its object the provision of an improved method for stoking the same or, inother words, of feeding fuel thereto, and wherein the fuel is over-fed rather than under- In practicing my invention, I placerows of I fuel successively side by side, preferably ZQI "fire box without materiallyv disturbing the -flame-structure, which may continue its heatwithout materially overlapping each other, whereby the fuel maybe injected into the ing function properly, and whereby, in the preferred embodiment of the invent on, weak ines are formed in the fire that are parallel 'witheachother, whereby weakspots in the fuel bed in the process of combustion, are not likely tobe formed at irregularly disposed locations. I w

' In accordance with thep'referred practice of the invention, the rows of fuel are so far apart that ridges are formed with valleys between, which valleys afford the weak lines in the structure of the fuel bed, for the purpose hitherto stated. By the formation of ridges in the fire box, the finer particles of the fuel may find lodgment u on the tops of the ridges and the looser and arger particles:

thereof may roll to the bottom of the ridges where the looser fire bed structure is located. In practicing my invention, I employ 'mechanism that casts streams of subdivided coal in the fire born-these, streams of coal being spread abreast, preferabl longitudi nally of the fire box; After t e 'coal has :fallen, it lies in rows upon the bed of fuel,

' and as these rows may be comparatively thin,

" without breaking'up, the formation of the they may be deposited upon the bed of fuel burning bed .of fuel. I desirably-emploty a device which disposes these rows of fresh. uel

upon the burningbed of fuel, andfaf terthe redetermined number of rows of green fuel lave been placed upon the burning bed, the

dis tributer of, the-green fuel is quickly re- 1 compound dog or detent.

tinned. Bythis arrangement, no green fuel is immediately deposited upon a row of green fuel last laced, but rather is disposed upon or neart e first row of the series-of rowsof green fuel, which b this time may have formed a part of the urning bed of fuel. In the formation of each row, I also desirably impart to the distributor agradual movement as the fuel is being deposited and a quick return movement to another initial position, so that green fuel is not likely to be 7 placed upon other green fuel just laid. I desirably employ a distributer which is moved to'dispose a plurality of rows of fuel turned to an initial position, whereafter the operation previously described may be con-- upon a burning bed of fuel-and is caused to return to an initial position suddenly, and which distributor is moved gradually so asto laythe fuel along its course in thediiferentjy rows, one by one, and quickly return to another initial position with reference to this operation, for the purposes stated.

In the preferred practice of the invention, the fuel is not thrown .with such force as to --disturb the fuel bed structure, though Ido not wish to be limited to this aspect of the preferredform of the invention. That fea-v ture of my invention whereby rows "of green fuel are placed abreast on the previously formed bed of fuel, is important.

My invention will be more fully hereine after set forthin. connection with the accompanying drawings, showing the preferred mechanism for practicing the process of mydetail of-a part of the mechanism entering into the structure. Fig. 8 is a view on a larger scale, of a compound dog or detent entering intothe construction. Fig. 9 is a sectional view of a part-of the'structure on line 01 of Fig; 6, showing the location of the Fig. 10 is a viewin the direction of a'r'iqlow e of- Fig; 6, showing I the'compound dog and certain arts immediately associatedtherewith. ig. 11 is a lee In order that the o erating mechanism may be disposed upon t e exterior of the fire box, I provide a curved slot 16 whose center is coincident with the axis of the throat 2. The bracket formation and the link 13 project through this slot 16. The link 13 is -lmked to an o crating bar 17 provided with a roller 18w ich may be constructed and mounted as illustrated particularly in Fig. 1,

' 1Q thismoller 18 being adapted to ride upon a.

jFigs. 1 and 5 that the elements 13, 1-7 and 18 "runway 19, whose direction is oblique or slanting with respect to the furnace door, whereby the link '13 is reciprocated for the m purposes stated' The descent of the dis-' ;5 .tributing spout 9 is gradual and itselevation issudden', to which end the roller 18 rides down on the-inclined track 19 toward the furnace door 1 and is brought suddenly to the high point ofthetrack 19 after it has finished 1 29 its-downward -jou'rney upon said track. In order that this result may be accomplished, 'I em loy 'a s ring or other suitable agency 20 w ich is p aced under stress or. tension by the rotation of the ring 21 in a counterclockwise direction by mechanism to be set forth When the roller l8'ha-s reached the lowerlimit of its travel, said spring is .placed under sufficient tension suddenl-y'to-restore the roller to the other end of the track, but during the time that the spring is being placed under this tension,- a compound'dog erdetent 22 is effective to prevent the operatioh ofthe spring and the rotation ofthe ring 2 1 until the roller has reached the low art of the track 19, as stated. I The high-en of the spring20 is anchoredto an extension 23 of a Iliig 24 (to which: the bracket 15 is secured), the ring carrying a seriesof locking lugs 25, and the lower end ofj aid s ring 20 is 4o -an chored to the ring 21, which atterring is adually rotated a predetermined distance in one direction and is restored to its initial position by movement in a reverse direction, I, "as will appear; While the rin 21 is moved gradually inv one direction, the spring 20 "effects an intermittent movement of the .ring 24 in'the same direction, and this movenient of the ring 2 1 is made intermittent because'of the com ound dog 22, the lower member 26 of which is inengagement with the vertical'side' 27 of. a: lug 25, while the spring 20 is having its tension increased, the engagement of the parts 25, 26 being broken when an incline 28 traveling with thering21 is brought under theincline 29 of the'compound dog, w'hereby said dog is elevated against the force of a spring 30, whereupon there is nothin to-limit the action of the spring 20, whic then moves thering 24 a do from theen a ing lug 25, the spring 30 {tries the .des cen t 0%? the dog 22, whereby the nose2fi j is brought into-thepathof the surface 21 fofthe-next lug 25, whereupon, the lower; 5- end of the spring 21). continui ng-"to.,;rotate step.- After this escape. of the compound.

.thenext ensuing surface 28.will ride under the surface 29 to again relieve the spring 20 of its impediment (25), whereupon the ring 24 is suddenly rotated another step again to restore the distributer to its raised position by causing the roller 18 to ascend the incline 19. l i v It will be seen particularly reference to are mounted upon the inner ring 24 so that each time the said innenring is moveda step the roller 18 is moved tothe high end of the track 19, the track 19 hmoving underneath, the roller 18, whereby the'said roller is caused to roll u on the track, due. tot'he weight I of" the distributing/spout 9 acting through the intermediation of the 'connec t'ions 10, 11,12, 13 and 17. It will thus be y .the ridingaction of the seen how the spout 9 is moved gradually in one direction roll er 18 upon the track 19 and'how it is moved rapldlyin the reverse directionby the action of. the spring 20-.'- The "extreme positions occupied by the distributingspout 9 in forming each row of fuel, are determined by means of a hand regulator '31 which h'asa threaded stem 32 that may be moved in and out and which engages at itsinner end the upper end of operating har 17= By means 9 the regulating mechanism 31, 32, the pins 33 (carried at the up er end offthe bar 17) v are moved to the se ected' position in the sustaining slots 34, said pins thus con-f stituting a shiftable trunnion support.

The ring 21 is caused to rotate in a counter-1 clockwise direction through the same angle that the ring 24;rotates through, the rotation of the ring 21 being gradualw'hile the rotation of the ring 24 is step-by g p} the purge pose of which rotation of the ring 21 is to cause the bodily movement of the link 13 and bracket 15 throughout a range of travel commensuratewith the width of the fire box, whereby the entire fire box has layers of green fuel distributed thereover longitudinally thereof, the groove 16 permitting of, I

this movement of the parts 13, 15,etc. V

Any suitable means may be employed for effecting the rotation of the ring 21. I'have shown a gear wheel 35 driven by means of intermediate gearing 36 that is interposed between the wheel 35 and theshaft7; This gear wheel 35 cooperates'with alimitednumbar of teeth. 37 provided upon th'e'ringZI, whereby said ring is rotated gradually, the number of teeth 37 being suited to the'numher of rows ofvfuel' that are-tobe laid in each cycle-of oper tions of the" mechanism, and, in order that the distributing 'spout maybe gaiidin nowits movement in distributing quickly restored to its'i'nitial position (ie rows o fuel across the fire b03321 so formthe rgear 35. that when it hasperformed-itsing it in a clockwise direction, by whichtime may be prepared to perform its function when the wheel 35 escapes the teeth 37, and

in Fig. 2. By

tent, it will escape the teeth 37, whereupon the spring 38 which is anchored at one end to the rii'ig 21 and at the otherend to the door of the furnace, restores the ring 21 by mov the'gear wheel 3.5 has been brought into position to renqage" the teeth 3 other cycle of operations.

It will be seen that the spring'SS has its tension increased as the ring 21 isrotated ina counter-clockwise direction in order that it for the purpose of this esca ement, there may be a comparatively wire gap 35 "between two adjacent teeth of the wheel 35, this space enabling the teeth 37 to pass by said wheel when the spring 38 is to operate. In order that the ring 24 may at the same time be restored to its normal position through the action of the spring 38- and the intermediation of the spring 20, the pin 39 (carried by the wheel 35) en ages the pin 40 upon the compound dog, whereby said dog is raised against the action of the spring 30. l The degreeof inclination of the track 19 may bedetermined by the adjusting-device 41, whose stem 42 works through the free endof the track 19, as indicated most clearly regulating the degree/of inclination 'of the track 19, the length of the row of fuel that is cast into the box is deter mined. Suitable locking bars43, 44 are employed to maintain the stems of the 'devices 31', 41 in the positions towhioh they are rotated.

By way of a short rsum, it will be seen that the track 19 carried by theouter ring 21, governs the elevation and depression of the distributing spout 9 in the formation of the different rows of fuel, while the inner ring 24, by its intermittent movements, effects the movement of the bracket 15 carrying the distributing spout 9 in a curved path, whereby said s out is positioned to enable it to ing with the axis of 'the distributing spout 9 when said spout occupies the position illus-' trated in ful lines in Fig. 1,; these axes always occupying, in thepreferred apparatus "of-the invention, the same plane.

Y -By reason of the com ound movements imparted to the distributing spout 9 by the devices 13 and 15, the exit'opening of said I s out is directed to form the different rows 0 fuel and the spout. itself is, lo'oking down on it, pointed toward'thedifferent arts of 'theffirebox, as the shaft 14m onw 'ch the spout 9- may rotate is itself odily rotated a out an axis that is coincident with the axes of the throat 2 and of the'sp'out i when saidspout occupiesthe position shown-in 7 to initiate anmounting 14 for the spoutis. moved from side to side and desirably in a curvilinear path, though I do not wish to be limited to the precise direction in which the said mountingls moved. :It will be seen thatthe axis of rotation of the mounting 14 is coincident distributed ongitudinally of the fire bd or box, as indicated in Fig. 13, and that this fuel 1 may 'be-disposedin decided ridges, as indicated in Fig. 14, if the rows are spaced sufli- By reference to Fig. 14in ciently apart. particular, it"nw'ill be seen that weakened lines of the fuelbed are located in the valle s between the ridges of fuel and that the angerof blow holes and promiscuously disposed openings in the fuel bed structure is eliminated to very ractical extent 'by the method hereinset f drth. Other advantages consequent to the'practice of my invention, have been dwelt upon and need not be here re eated. V

, xcept as indicated incertain of the claims, I do not limit myself to a process'the result of which is the distribution of rows of fuel-that are distinct from each other after they are front of thefire box to form a row of fuel,

changing the directionof the stream to depositin ike manner a row of fuel adjacent to the first row, and continuing the o eration until a longitudinal series of rows o fuel is laid over the fire bed. Y

2.v The method of etching furnaces, which consists in introducing a stream of fuel into the fire box in a line afl'OHi the rear to the front of the fire box to form (a row :of fuel,

posit in ke manner a row of fuel adiacent to "the first row, continuing the operation until a longitudinal series of rows of fuel is laid over the fire bed, and spacing said rows of fuel such 'distances apart that they become-of ridge formation with depressions oryalleys ,between.

3. The method of stokingfurnaces, which changing the direction, of the stream to de- 'consists in introducinga stream of fuelinto the fire box in a line from the rear to the front of the fire box to form a row of, fuel,

changing the direction of the stream to de-' changin posit in like manner a row of fuel adjacent to the first row, continuing the operation until a longitudinal series of rows of fuel is laid over the fire bed, and forming the said rows of fuel by commencing at the same ends of the rows, whereby green fuel will not be deposited upon most freshly laid green fuel.

4. The method of stoking furnaces, which the fire box in a line from. the rear to the front of the fire box to form a row of fuel, the direction of the stream to de posit in ike manner a row of fuel adjacent to the first row, continuing the operation until a longitudinal series of rows of fuel is laid over the fire bed, spacing said rows of fuel such distances apart that they become of.

ridge formation with depressions or valleys between, and forming the said rows of fuel by commencing at the same ends of the rows, whereby green fuel will not be deposited vupon most freshly laidgreen fuel.

5. The method of stoking furnaces, which consists in introducing a stream of fuel into the fire box in afline from the rear to the front of the fire boxto form a row of fuel,- changing the direction of the stream to deposit in like manner a rowuof fuel adjacent to the first row, continuing the operation until a longitudinal series of rows of fuel is laid over .the fire bed, and commencing each series of rows atthe sameside of the fire bed, where- .by the first row of one series of rows is not' laid upon the last row of the preceding series of rows of fuel,

' 6'. The method ofstoking furnaces, which consists in introducing a stream offuel into the fire box in a line from the -rear to the front of the fire box to form arow of fuel, changing the direction ofthestream to deposit in like manner aqnwof fuel adjacent to the first row, continuing the o eration until a longitudinal. series of rows of fuel is laid over the fire bed, spacing said rows of fuel such distances apart that they become of ridge formation with depressions or valleys between, and connecting each series of rowsat the same side of the fire bed, whereby the first row of'one series of rows is not laid upon phe'llast row of the preceding series of rows of 7. The method of stoking furnaces, which consists in introducing a stream of fuel into.

the fire box in a line from the rear to the front of the fire box to form a row of fuel, changing the direction of the stream to deposit in like manner a row of fuel adjacent to the first row, continuing the o eration until a longitudinal seriesof rows of uel is laid'oyer the fire bed, commencing each seriesof rows at the same. side of the fire bed, whereby the first row ofone series of rows is not laid upon the last row of the preceding series of rows of fuel, and forming the said rows-of fuel by commencing at. the same ends-of the rows,

whereby green fuel will not be deposited upon most freshlylaid reen fuel.

8. The method of sto ing furnaces, which consists in introducing a stream of fuel into the fire box in a line from the rear to the front ofthe fire box to form a row offuel, changin the direction of the stream to deposit in like manner a row of fuel adjacent to the first row, continuing the o eration until a longitudinal series of rows of uel is laid over the fire bed, spacing said. rows of fuel such distances apart that they become of ridge formation with depressions or valleys between, commencing each series of rows at the same side of the fire bed, whereby the first '80 row of one series of rows is not lald uponthe.

last row of the preceding series of rows of posit in like manner a row of fuel suhstantially parallel to the first row, and continuing the operation until a longitudinal series of rows of fuel'is laid over the fire bed.

10. The method of stoking furnaces, which consists in introducing a stream of fuel into the fire box in a line from the rear to the front of the fire box to form a row of fuel, changing the direction of theflstream to .deposit in like mannera row of fuel'substant-ially parallel to the first row, continuing the operation until a longitudinal series of rows of fuel is laid over the'fire .bed, and spacing said rows of fuel such distances apartthat they become of ridge formation with depressions or valleys between.

11. The method of stoking furnaces, which the fire box in a line from the rear to the front of the fire box to form a row of fuel,

changing the direction of the stream tQ depositin like manner a row of fuel substantially parallel to the first row, continuing the o eration until a longitudinal series of rows of fuel is laid over the fire bed, and forming the said rows of fuel by commencing at thesame ends of the rows, whereby green fuel will not be deposited upon most freshly laid greenfuel. 12. The method of stoking furnaces, which consists in introducing a stream of fuel into the fire box in aline from. the rear to the front of the fire box to form a row of fuel, changing the direction of the stream to .de osit in like manner a row of fuel substantia ly parallel to the first row, continuing the o erationuntila longitudinal series of rows 0 fuel is laid over the fire bed, spacing said rows of of ridge formation with depressions or val leys between, and forming the said rows of fuel by commencing at. thesame ends of the rows, whereby green fuel will not be deposited upon most freshly laid green fuel. 13. The method-of stoking furnaces, which consists in introducing a stream offuelinto the fire box in a line from the rear to the front of the fire box to form 'a rowof fuel,

changing'the direction of the stream to deposit in'like manner a row of fuel substantially parallel to the'first row, continuing the operation until a longitudinal series of rows o fuel-is laid over the firebed, forming said rows of green fuel successively, and come .mencin each series of rows at the same side ofthe lire bed, whereby the first row of one series of rows i'svnot laid upon thelast row of the-preceding series of rows of fuel.

14. The method of stoking furnaces, which consis-ts inintroducingl a stream of fuel into the fire box in a line from the rear to the front'of the fire box to form a rowof' fuel, changing the direction of the-stream to detially parallel to the first row, continuing the operationuntila longitudinal seri'es of rows fuel is laid over the .fire bed, spacing said W rows of fuel such distances apart that-they :become "of ridge formation with depressions "---or yalleys between, forming said rows of,

green'fuel successively,and commencing each series of rowsat the sameside of'the fire bed, whereb the first row of one series. of rows is not lai uponthe last row of the series of rows of furl front of the'fire box to form a row of fuel,

osit in like manner a row of fuel substan green fuel successively, comm preceding changing the direction of the stream to (ls-- positinlike manner a row of fuel substantially parallel tothe first row, continuing the o 'eration until a longitudinal series of rows of fuel is laid over the fire bed, forming said rows of-green fuel successively, commencing each series of rows at the same side of the fire bed, whereby the first-row of one series of rows is not laid upon the last row of the preceding'series of rows of fuel, andforming the said rows of fuel by commencing at the same ends'of the rows, whereby green fuel will not be deposited upon most freshly laid green fuel. I i

16. The method ofstoking furnaces, which consists inintroducing a stream of fuel into the fire' box in a line from the rear to the front of the fire box to form a row'of fuel, changing the direction of the stream to deposit in like manner a row of fuel substantially parallel to the first row, continuing the operation until a longitudinal series of rows of fuel is laid over the fire bed, spacing said' rows of fuel such distances a art that they become of ridge formation wit depressions or valleys between, forming said rows of cing each series of rowsat the same side of t e fire bed, whereby the first row of one series of rows is not laid upon the last row of the preceding series of rows of fuel, and forming the said rows-of fuel by commencing at the same ends of the rows, whereby green fuel. will not be cle V osited upon most freshly laid green fuel.

n witness whereof, I hereunto subscribe my name this 19th day of'June A. D., 1906.

' CLARENCE W. CROSBY. Witnesses:

G. L. CRAGG,

LEON E. STROH. 

